Henry p



(No Model&

H. P. APPLETON.

KNOB ATTAGHMENT.

No. 331.752. `Padexted Dec., 8, 1885.

a %Gzim UE55E5= UNTED STATES ATENT Gr mca,

HENRY P. APPLETON, OF

NORYV ICH, CONNECTICUT.

KNOB ATTACHMENT.

SJPECIFICATION forming part of Letters Patent No. 331.752, datedDecember 8, 1885.

Application filed March 27, 1885.

To all whom it may cancel 'n:

Be it known that I, HENRY P. APPLETON, a citizen of the United States,residing at- Non wich, in the County of New London and State ofConnecticnt, have invented a certain new and useful Improvement in KnobAttachments, which improvement is fully set forth and described in thefollowing speciication reference being hadto the accompanying drawings,in which- Figure 1 is a vertical sectional View of a portion of a doorhaving a look-case in proper position, and also showing my improvedmethod of connecting the knob-necks, thehuhspindle being partially cutaway to eXpose the looking-key. In Fig. 2 I have shown detached topviews of the knohnecks and the hoh-Operating spindle.

My invention relates to that class of knoh attachments in which thespindle is threaded at its angles, in order that aninternall y-threadedknob-neck may be screwed thereon to adjust the knobs to doors ofdifferent thickness, my immediate object being to provide a con venientand ineXpensive means for looking the adjustable neck to the spindleafter the knobs are in the desired position in the door.

In the annexed drawings, A represents the door, B the iock-oase seat-edin its mortise, and C the bolt-operating hub, having the usual centralrectanguiar opening.

aa' represent the knobhecks, and b the hnb-' Operating spindle, one ofwhose ends is pret e'ably fastened rigidlyin neck a'. Said spindle isthreaded at its angles throughout the greater portion of its exposedpart, as shown in the drawings, and the knob-nech a is provided with acircnlar central hole threaded to engage the threaded spindle. Spindle bis slotted longitndinally, as at c, to receivea locking-key, e, said keyand the means shown for looking it in a given position being the vitalparts of this present invention. Key eis so1ocated and pivoted in aslotin neck a that its free sector-shaped end may be forced downward intoslot c, to prevent the neck from rotating on the spindle, in whichposition the outer edge of said key is fiush with the periphery of theknohneek. After the several other parts are properly adj usted the roseor escutch- Serial No. 160,1-i8. (No model.)

eon E is slipped forward into place and secured to the door by any ofthe means in common use.

To prevent all tendency on the part of the key to work loose, I havedrilled the shell of the neck a longitndinally, and have placed thereina spring, d, and plug f, said spring acting with a constant tendency toforce plug f forward into engagement with the edge of the key; and tofurther provide means for retaining the key in either an open or closedposition, I have provided in the edge of the key notches or depressionsi t, one of which fnrnishes a seat for plug f when said kcy is raisedand thrown out of engagement with the slotted spindle, (see dottedlines, Fig. 1,)the other notch being adapted to engage saidspring-pressed plug to hold the key in its lowered position. Said key iscut under slightly at its outer upper end, and the neck is cuttransversely, so that a fingernail or sharp instrument may be easilyused to raise the key when desired.

To operate my device, pass the spindle through the hub G until the fixedneck a' ahuts against said hub, as in Fig. l. The rose E is now slippedonto neck a, and with the key raised, as in dotted lines, Fig. l, saidneck is screwed onto the threaded spindle until it also abuts againstthe hub C. The key is now forced downward until its upper notch, i,engages the spring-pressed plug f, and the rose is slipped forward andfastened to the door.

I am aware that spindles with threaded angles engaginginternally-threaded knobnecks have been used to provide the neces saryadjustment to doors of different thicknesses, and do not, therefore,broadly claim such a means for adjustnent.

hat I claim as new, and wish to secure by Letters Patent, is

1. In combination with a longitndinally slotted hub-spindle whose anglesare threaded, and an internally-threaded knob-neck adapted to engagesaid spindle, a key pivoted in a longitndinal slot in the knob-neck andcapable of entering the longitndinally-slotted spindle, to prevent saidspindle froni rotating within said knob-neck, and means for retainingsaid key in engzgement With the spindle-slct, all substantally as herendescribed.

2. In combination with a hub-operating spindle having threadecl angles,a knobneck 5 internally threaded 130 engage said spndle, ZL key sopivoted in the kn0b-neck thai; it may be forced into the sp'ndle-slot,and a springpressed plug located in the knob-neck and adaptcd to cngzgenotches i i' in the Sectorshaped edge of the key, all substantally asdescribed, and for the objecbs set forbh.

HENRY P. APPLETON.

witnesses:

FRANK H. ALLEN, TYLER J. HOWARD.

